Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
70,835,850
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 3,298,559
2 linkedin.com 421,511
3 twitter.com 408,936
4 amazon.com 177,506
5 namu.wiki 137,139
6 facebook.com 132,456
7 x.com 125,955
8 allocine.fr 102,168
9 instagram.com 102,019
10 deezer.com 56,481
11 youtube.com 44,031
12 wiktionary.org 31,092
13 google.com 30,484
14 isfdb.org 29,685
15 trustpilot.com 22,038
16 yahoo.com 18,847
17 gutenberg.org 18,821
18 britannica.com 18,536
19 crunchbase.com 16,658
20 legacy.com 15,024
21 reddit.com 13,548
22 dictionary.com 12,589
23 microsoft.com 10,047
24 tiktok.com 9,840
25 wikiquote.org 9,691
26 fandom.com 9,202
27 metacritic.com 8,731
28 apple.com 7,517
29 uk.com 7,449
30 rottentomatoes.com 7,005
31 famousbirthdays.com 6,724
32 indeed.com 6,220
33 espn.com 6,124
34 webuy.com 5,888
35 justwatch.com 5,793
36 github.com 5,737
37 fifa.com 5,606
38 letterboxd.com 5,510
39 forbes.com 5,485
40 pinterest.com 5,413
41 imdb.com 5,402
42 wikia.com 5,255
43 mit.edu 5,237
44 quora.com 5,166
45 spotify.com 4,993
46 vikidia.org 4,848
47 netflix.com 4,720
48 reuters.com 4,647
49 house.gov 4,535
50 plus.lefigaro.fr 4,538
51 premiere.fr 4,496
52 nintendo.com 4,357
53 wikiwand.com 4,252
54 bbc.co.uk 4,182
55 last.fm 4,122
56 history.com 4,077
57 theguardian.com 4,058
58 awards.com 4,008
59 soundcloud.com 3,916
60 investing.com 3,844
61 meta.com 3,807
62 linkedin.cn 3,746
63 dell.com 3,698
64 cambridge.org 3,688
65 bloomberg.com 3,612
66 coach.com 3,456
67 vocabulary.com 3,334
68 baseball-almanac.com 3,218
69 ign.com 3,196
70 thesaurus.com 3,201
71 wikisource.org 3,054
72 ca.gov 3,001
73 playstation.com 2,967
74 go.com 2,946
75 bio-on.it 2,917
76 nih.gov 2,912
77 treated.com 2,900
78 billboard.com 2,636
79 example.com 2,604
80 rateyourmusic.com 2,552
81 genius.com 2,547
82 family-side.com 2,541
83 a-artist.com 2,539
84 discovery.ca 2,526
85 hotels.com 2,478
86 nb.com 2,460
87 rs-online.com 2,424
88 bbc.com 2,394
89 dailymail.co.uk 2,358
90 unesco.org 2,345
91 app-microsoft.com 2,337
92 chess.com 2,315
93 washington.edu 2,275
94 rakuten.com 2,236
95 oracle.com 2,213
96 notrecinema.com 2,217
97 war.gov 2,195
98 nasa.gov 2,148
99 google.com.br 2,150
100 wa.gov.au 2,128
101+ 62,102 additional niche-specific domains in full dataset covering 65,272,861 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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